CN103413608B - A kind of high temperature resistant flexible cable for metallurgy and sheath material thereof - Google Patents
A kind of high temperature resistant flexible cable for metallurgy and sheath material thereof Download PDFInfo
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- CN103413608B CN103413608B CN201310307833.8A CN201310307833A CN103413608B CN 103413608 B CN103413608 B CN 103413608B CN 201310307833 A CN201310307833 A CN 201310307833A CN 103413608 B CN103413608 B CN 103413608B
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Abstract
The invention discloses a kind of high temperature resistant flexible cable for metallurgy, its object is to overcome existing buggy ladle cable resistance to elevated temperatures poor, tear resistance is poor, the defect that useful life is short.The present invention includes cable inner core and wrap in the cable outer layer outside cable inner core, described cable inner core is followed successively by conductor wire core, wrapped mica belt, silicone rubber insulation layer and fireproof high-temperature resistant layer from inside to outside, described cable outer layer is followed successively by high-flame retardant fire-insulating layer and the anti-tear sheath of fire-retardant height from inside to outside, is filled with flame resistant filler rope in the space between cable inner core and cable outer layer.Heat-resisting quantity of the present invention is good, and flame-retardant performance is good, and tear resistance is good, good insulation preformance, long service life.
Description
Technical field
The present invention relates to a kind of flexible cable, particularly a kind of high temperature resistant flexible cable for metallurgy and sheath material thereof.
Background technology
At present, the widely used buggy ladle cable of China's metallurgy industry is mainly conductor with copper, and General Purpose Rubber is the traditional handicraft of insulation and sheath material.China is that the first in the world iron and steel is produced, consumed big country, buggy ladle cable demand is huge, cable environment for use is very special, severe, bear very large pulling force and ambient temperature is high, use in there will be at any time molten steel spatter boiling hot, slag collides with, cable car stretches, surface wear, internal break situation, cause cable to damage in various degree and even scrap.Traditional cable conductor structure is single, tensile strength is low; Insulation and sheath material mechanicalness, tear resistance, resist subdue, elasticity and poor processability; Oxytolerant and ozone resistance poor, easy aged deterioration; Heat-resisting quantity is poor, and the corrosive power of antiacid alkali is low; Thermal endurance is low, and is combustible material.Therefore, generally can only run about 5-10 days, solve not in time once cable goes wrong, molten steel just can not be transported to assigned address in time, and molten steel not only causes very large waste to resource together with will being set in buggy ladle, and consequence is very serious, economic loss is huge.
The of this type cables such as the common rubber sleeve flexible cable that the industry converter cables such as current China iron and steel, metallurgy mostly adopt except import replace using, but product life cycle is very short, and there is many potential safety hazards, the production capacity benefit of the too much replacing frequency serious Ying Liaoxiang China steel industry, for the exploitation of the super high-temperature resistant flexible cable for metallurgy of research and development high performance requirements being extremely urgent.
The original sheath material of this flexible cable is traditional General Purpose Rubber, the non-constant of flame-resistant high-temperature-resistant, and tear resistance is poor, oxytolerant and ozone resistance poor, easy aged deterioration, short for useful life at metallurgy industry, and the high temperature resistant and tear resistance that this flexible cable overall structure is arranged is all poor.
A kind of silicone rubber insulating fire-resisting flexible cable of the disclosure of the invention of CN101847461A, comprise cable inner core and wrap in the cable outer layer outside cable inner core, in described cable, core inner is followed successively by conductor wire core, insulating barrier and flame retardant coating from inside to outside, described cable outer layer inside is followed successively by fire-retardant band and restrictive coating from inside to outside, is provided with flame retardant type filler in the space between described cable outer layer and cable inner core.
Summary of the invention
The object of the invention is to overcome existing buggy ladle cable resistance to elevated temperatures poor, tear resistance is poor, the defect that useful life is short, there is provided a kind of high temperature resistant flexible cable for metallurgy, heat-resisting quantity is good, and flame-retardant performance is good, tear resistance is good, good insulation preformance, long service life.
Another object of the present invention is to provide a kind of high temperature resistant flexible cable for metallurgy sheath material, has reliable low smoke and zero halogen, flame-retardant, high temperature resistant, tear resistance, bending resistance, hot air environmental advantages.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of high temperature resistant flexible cable for metallurgy, comprise cable inner core and wrap in the cable outer layer outside cable inner core, described cable inner core is followed successively by conductor wire core, wrapped mica belt, silicone rubber insulation layer and fireproof high-temperature resistant layer from inside to outside, described cable outer layer is followed successively by high-flame retardant fire-insulating layer and the anti-tear sheath of fire-retardant height from inside to outside, is filled with flame resistant filler rope in the space between cable inner core and cable outer layer.
Because cable is in high temperature furnace district mobile operating state for a long time, normal cable structure can not meet technique requirement, the present invention is directed to this point and carried out particular design, adopt: the structural type of (fireproof high-temperature resistant layer)+high temperature resistant filler (flame resistant filler rope)+glass fibre belt wrapped (high-flame retardant fire-insulating layer)+anti-tear sheath of fire-retardant height is strengthened in 6 class conductor (conductor wire core)+synthetic mica tapes (wrapped mica belt)+silicon rubber insulation+glass fiber braiding.Be in the operating state of high temperature furnace district mobile operating state for a long time with appropriate cable, heat-resisting quantity is good, and flame-retardant performance is good, and tear resistance is good, good insulation preformance, long service life.
Wrapped mica belt is hot-face insulation effect.The thickness of silicone rubber insulation layer sets according to product specification, is generally 1.2-2mm.The thickness of the anti-tear sheath of fire-retardant height sets according to product specification, is generally 2-4mm.
As preferably, described wrapped mica tape layer thickness is 0.2-0.5mm.Controlling wrapped mica tape layer thickness is that 0.2-0.5mm hot-face insulation performance is good.
As preferably, the material of described fireproof high-temperature resistant layer is fiberglass braided thing, and the thickness of described fireproof high-temperature resistant layer is 0.5-1mm.The thickness controlling fireproof high-temperature resistant layer is 0.5-1mm, and fireproof high-temperature resistant performance is good.The silicone rubber insulation layer of conventional structure is outward flame retardant coating, adopt nonwoven cloth material, the present invention is outward fireproof high-temperature resistant layer at silicone rubber insulation layer, and material is fiberglass braided thing, the surface structure intensity of such cable inner core improves greatly, is easy to be full of cracks and fracture, improves useful life when preventing insulating barrier bending under frequent hot environment, and fireproof high-temperature resistant performance also significantly improves.
As preferably, the material of described high-flame retardant fire-insulating layer is glass fiber tape, and the thickness of described high-flame retardant fire-insulating layer is 0.3-0.6mm.High-flame retardant fire-insulating layer is the wrapped two-layer formation of glass fiber tape.Controlling the thickness of high-flame retardant fire-insulating layer is 0.3-0.6mm, high temperature resistant, fire resistance good.
As preferably, described flame resistant filler rope is glass cord.
As preferably, the material prescription of the anti-tear sheath of described fire-retardant height is counted by weight: raw-silastic continuously 100 parts, constitution controller 7-8 part, reinforced filling 15-20 part, antioxidant 6-8 part, halogen-free flame retardants 10-14 part, vulcanizing agent 10-15 part.
Because cable Long-Time Service is at the high-temperature operation environment of metallurgical converter, and be often in mobile operating state, cause the phenomenon such as be full of cracks that common cable can occur when hot bending is met in internal break and insulation.In order to improve the resistance to elevated temperatures of cable, impart tear and useful life better, the present invention carries out material improvement on existing silicone rubber jacket.Auxiliary agent is improved by adding constitution controller, reinforced filling, antioxidant, halogen-free flame retardants and vulcanizing agent etc., the features such as resulting materials has reliable low smoke and zero halogen, flame-retardant, high temperature resistant, tear resistance good, bending resistance is good, hot air environment, electrical property and physical and mechanical properties have had remarkable lifting.
As preferably, constitution controller is diphenyl silanediol, and reinforced filling is fumed silica, and antioxidant is di-iron trioxide, and halogen-free flame retardants is molybdenum trioxide, and vulcanizing agent is two (tert-butyl peroxide) hexanes of 2,5-dimethyl-2,5-.Two (tert-butyl peroxide) hexane of 2,5-dimethyl-2,5-is " 2,5 " vulcanizing agents also known as two.
As preferably, the material preparation method of the anti-tear sheath of described fire-retardant height is: plasticated by raw-silastic continuously evenly in mill at temperature 30 ± 1 DEG C, then constitution controller, reinforced filling and antioxidant mixing 13-16min at 35-45 DEG C is added, add halogen-free flame retardants mixing 6-8min at 35-45 DEG C again, finally add vulcanizing agent mixing 5-7min at 35-45 DEG C, cooling.During preparation, controlling melting temperature can not more than 45 DEG C, and the too high meeting of temperature makes silicon rubber over cure, causes poor-performing.
A kind of high temperature resistant flexible cable for metallurgy anti-tear sheath material of fire-retardant height, the anti-tear sheath material formula of described fire-retardant height is counted: raw-silastic continuously 100 parts, constitution controller 7-8 part, reinforced filling 15-20 part, antioxidant 6-8 part, halogen-free flame retardants 10-14 part, vulcanizing agent 10-15 part.
As preferably, constitution controller is diphenyl silanediol, and reinforced filling is fumed silica, and antioxidant is di-iron trioxide, and halogen-free flame retardants is molybdenum trioxide, and vulcanizing agent is two (tert-butyl peroxide) hexanes of 2,5-dimethyl-2,5-.
The invention has the beneficial effects as follows:
1, adopt: the structural type of (fireproof high-temperature resistant layer)+high temperature resistant filler (flame resistant filler rope)+glass fibre belt wrapped (high-flame retardant fire-insulating layer)+anti-tear sheath of fire-retardant height is strengthened in conductor wire core+synthetic mica tape (wrapped mica belt)+silicon rubber insulation+glass fiber braiding.Be in the operating state of high temperature furnace district mobile operating state for a long time with appropriate cable, heat-resisting quantity is good, and flame-retardant performance is good, and tear resistance is good, good insulation preformance, long service life.
2, adopt the fire-retardant height anti-tear sheath energy available protecting cable of specific research and development under long term high temperature state because of the cable bend winding frequency higher with insulating barrier between phase mutual friction and the cable fault that causes; Thus avoid cable in high-temperature electric free electric discharge phenomena after the match, even if cable still can keep certain effective run time when Local Damaged, make the insulation property of cable be in safe slave mode.
Accompanying drawing explanation
Fig. 1 is a kind of cross-sectional structure schematic diagram of the present invention.
In figure: 1, conductor wire core, 2, wrapped mica belt, 3, silicone rubber insulation layer, 4, fireproof high-temperature resistant layer, 5, high-flame retardant fire-insulating layer, 6, the anti-tear sheath of fire-retardant height, 7, flame resistant filler rope.
Embodiment
Below by specific embodiment, and by reference to the accompanying drawings, technical scheme of the present invention is described in further detail.
In the present invention, if not refer in particular to, the raw material adopted and equipment etc. all can be buied from market or this area is conventional.Method in following embodiment, if no special instructions, is the conventional method of this area.
Embodiment:
A kind of high temperature resistant flexible cable for metallurgy as shown in Figure 1, comprise cable inner core and wrap in the cable outer layer outside cable inner core, cable inner core has 3, described cable inner core is followed successively by conductor wire core (copper conductor) 1, wrapped mica belt 2, silicone rubber insulation layer (thickness is generally 1.2-2mm) 3 and fireproof high-temperature resistant layer 4 from inside to outside, wrapped mica belt 2 thickness is 0.2-0.5mm, the material of fireproof high-temperature resistant layer 4 is fiberglass braided thing (commercially available), and the thickness of fireproof high-temperature resistant layer 4 is 0.5-1mm; Described cable outer layer is followed successively by high-flame retardant fire-insulating layer 5 and the anti-tear sheath of fire-retardant height (thickness is generally 2-4mm) 6 from inside to outside, the material of high-flame retardant fire-insulating layer 5 is glass fiber tape (commercially available), high-flame retardant fire-insulating layer 5 is the wrapped two-layer formation of glass fiber tape, and the thickness of high-flame retardant fire-insulating layer 5 is 0.3-0.6mm; Be filled with flame resistant filler rope 7 in space between cable inner core and cable outer layer, flame resistant filler rope 7 is glass cord (commercially available).
The material prescription of the anti-tear sheath 6 of fire-retardant height is counted by weight: raw-silastic continuously (vinylsiloxane rubber, commercially available) 100 parts, constitution controller (diphenyl silanediol, commercially available) 7-8 part, reinforced filling (fumed silica, commercially available) 15-20 part, antioxidant (di-iron trioxide, commercially available) 6-8 part, halogen-free flame retardants (molybdenum trioxide, commercially available) 10-14 part, vulcanizing agent (two (tert-butyl peroxide) hexane of 2,5-dimethyl-2,5-, commercially available) 10-15 part, specifically in table 1.
The material prescription of the anti-tear sheath of the fire-retardant height of table 1
| Raw-silastic continuously | Constitution controller | Reinforced filling | Antioxidant | Halogen-free flame retardants | Vulcanizing agent | |
| Formula 1 | 100kg | 7 kg | 20 kg | 6 kg | 14 kg | 15 kg |
| Formula 2 | 100 kg | 8 kg | 15 kg | 8 kg | 10 kg | 10 kg |
| Formula 3 | 100 kg | 7.5 kg | 18 kg | 7 kg | 12 kg | 12 kg |
The material preparation method of the anti-tear sheath of fire-retardant height is: plasticated by raw-silastic continuously evenly in mill at temperature 30 ± 1 DEG C, then constitution controller, reinforced filling and antioxidant mixing 13-16min at 35-45 DEG C is added, add halogen-free flame retardants mixing 6-8min at 35-45 DEG C again, finally add vulcanizing agent mixing 5-7min at 35-45 DEG C, cooling.
high temperature resistant, fire-retardant fireproof performance, anti-wear performance, the resist bending performance of flexible cable of the present invention and sheath material
1, the long-term permission working temperature of cable conductor reaches 90-250 DEG C.
2, during short circuit, the maximum temperature of (maximum duration is no more than 5s) cable conductor is no more than 1000 DEG C.
3, the fire retardancy test of cable cover(ing): when testing according to GB/T18380.11, the upper end of carbonization or undamaged portion and the distance on upper grip top are greater than 50mm.
4, fire-resistance property: cable carries out fire resistance test according to GB/T19216.21, fiery temperature is supplied to be 950-1000 DEG C, burning time is that 180min(Ministry of Public Security standard highest standard GA306.2-2007 I A level only needs 90min), the rated voltage of energising cable, neither one fuse or circuit breaker disconnect; Conductor is continuous, and namely bulb does not extinguish.
5, anti-wear performance: reciprocating motion 2000 times, i.e. one-way movement 4000 times, there is not open circuit in conductor, should not be short-circuited between conductor, be not short-circuited between cable and pulley (testing equipment), after off-test, peel cable cover(ing) (cable outer layer) off, insulated wire cores (cable inner core) stands the withstand voltage test of rated voltage and does not puncture.
6, the bending radius that cable allows is not less than 4 times of cable size, is applicable to high temperature occasion and bends the higher supply unit connection of the frequency.
Product electrical property of the present invention, insulation mechanical performance are in table 2, table 3.
Table 2
Table 3
。
From table 2, table 3, product electrical property of the present invention and physical and mechanical properties have had remarkable lifting.
Above-described embodiment is one of the present invention preferably scheme, not does any pro forma restriction to the present invention, also has other variant and remodeling under the prerequisite not exceeding the technical scheme described in claim.
Claims (2)
1. a high temperature resistant flexible cable for metallurgy, comprise cable inner core and wrap in the cable outer layer outside cable inner core, it is characterized in that: described cable inner core is followed successively by conductor wire core (1), wrapped mica belt (2), silicone rubber insulation layer (3) and fireproof high-temperature resistant layer (4) from inside to outside, described cable outer layer is followed successively by high-flame retardant fire-insulating layer (5) and the anti-tear sheath of fire-retardant height (6) from inside to outside, is filled with flame resistant filler rope (7) in the space between cable inner core and cable outer layer; Described wrapped mica tape layer thickness is 0.2-0.5mm; The material of described fireproof high-temperature resistant layer is fiberglass braided thing, and the thickness of described fireproof high-temperature resistant layer is 0.5-1mm; The material of described high-flame retardant fire-insulating layer is glass fiber tape, and the thickness of described high-flame retardant fire-insulating layer is 0.3-0.6mm; Described flame resistant filler rope is glass cord; The material prescription of the anti-tear sheath of described fire-retardant height is counted by weight: raw-silastic continuously 100 parts, constitution controller 7-8 part, reinforced filling 15-20 part, antioxidant 6-8 part, halogen-free flame retardants 10-14 part, vulcanizing agent 10-15 part; Constitution controller is diphenyl silanediol, and reinforced filling is fumed silica, and antioxidant is di-iron trioxide, and halogen-free flame retardants is molybdenum trioxide, and vulcanizing agent is two (tert-butyl peroxide) hexane of 2,5-dimethyl-2,5-.
2. a kind of high temperature resistant flexible cable for metallurgy according to claim 1, it is characterized in that: the material preparation method of the anti-tear sheath of described fire-retardant height is: raw-silastic continuously is plasticated in mill evenly at temperature 30 ± 1 DEG C, then constitution controller, reinforced filling and antioxidant mixing 13-16min at 35-45 DEG C is added, add halogen-free flame retardants mixing 6-8min at 35-45 DEG C again, finally add vulcanizing agent mixing 5-7min at 35-45 DEG C, cooling.
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| CN201310307833.8A CN103413608B (en) | 2013-07-22 | 2013-07-22 | A kind of high temperature resistant flexible cable for metallurgy and sheath material thereof |
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| CN201310307833.8A CN103413608B (en) | 2013-07-22 | 2013-07-22 | A kind of high temperature resistant flexible cable for metallurgy and sheath material thereof |
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| CN103413608A CN103413608A (en) | 2013-11-27 |
| CN103413608B true CN103413608B (en) | 2016-02-24 |
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| CN104761900A (en) * | 2015-03-16 | 2015-07-08 | 芜湖荣基密封系统有限公司 | High-viscosity easy-processing flame-retarding silicone rubber cement used for preparing ultrathin rubber sealing layer and preparation method thereof |
| CN106128603A (en) * | 2016-07-01 | 2016-11-16 | 太仓市林源电线电缆有限公司 | A kind of antioxidation high temperature photoelectric composite cable |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE8700516L (en) * | 1986-02-12 | 1987-08-13 | Kabelmetal Electro Gmbh | MULTI-TYPE ELECTRIC ENERGY CABLE |
| CN101781463A (en) * | 2009-01-19 | 2010-07-21 | 浙江元通线缆制造有限公司 | Fire-resistant silicon rubber and preparation method thereof and cable |
| CN101847461A (en) * | 2010-04-20 | 2010-09-29 | 上海索谷电缆集团有限公司 | Silicone rubber insulating fire-resisting flexible cable |
| CN102585513A (en) * | 2011-12-31 | 2012-07-18 | 全超 | Silicone rubber insulation material applied to high voltage cable accessories in European series and preparation method for material |
| CN202563962U (en) * | 2012-05-10 | 2012-11-28 | 重庆鸽牌电线电缆有限公司 | Novel flexible fireproof power cable |
| CN203397750U (en) * | 2013-07-22 | 2014-01-15 | 浙江万马电缆股份有限公司 | Flexible cable with high temperature resistance for metallurgy |
-
2013
- 2013-07-22 CN CN201310307833.8A patent/CN103413608B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE8700516L (en) * | 1986-02-12 | 1987-08-13 | Kabelmetal Electro Gmbh | MULTI-TYPE ELECTRIC ENERGY CABLE |
| CN101781463A (en) * | 2009-01-19 | 2010-07-21 | 浙江元通线缆制造有限公司 | Fire-resistant silicon rubber and preparation method thereof and cable |
| CN101847461A (en) * | 2010-04-20 | 2010-09-29 | 上海索谷电缆集团有限公司 | Silicone rubber insulating fire-resisting flexible cable |
| CN102585513A (en) * | 2011-12-31 | 2012-07-18 | 全超 | Silicone rubber insulation material applied to high voltage cable accessories in European series and preparation method for material |
| CN202563962U (en) * | 2012-05-10 | 2012-11-28 | 重庆鸽牌电线电缆有限公司 | Novel flexible fireproof power cable |
| CN203397750U (en) * | 2013-07-22 | 2014-01-15 | 浙江万马电缆股份有限公司 | Flexible cable with high temperature resistance for metallurgy |
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Effective date of registration: 20160509 Address after: 311305 Ling'an Economic Development Zone, Zhejiang Province, South Ring Road, No. 88, No. Patentee after: ZHEJIANG WANMA SPECIAL CABLE TECHNOLOGY Co.,Ltd. Address before: 311305 Ling'an Economic Development Zone, Zhejiang Province, South Ring Road, No. 88, No. Patentee before: ZHEJIANG WANMA Co.,Ltd. |
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